8 p.m.Saturday through 3 a.m.Monday: Northbound two right lanes closed

10 p.m.Friday, April 28 through 9 a.m.Sunday, April 30: Southbound two left lanes closed

8 p.m.Saturday, April 29 through 3 a.m.Monday, May 1: Northbound two left lanes closed

While the northbound work is being done this weekend (8 p.m. Saturday through 3 a.m. Monday), traffic traveling in that direction will not be able to make the left turn onto the westbound Dulles Toll Road. Those cars will be detoured via Sunset Hills Road and Wiehle Avenue.

The work will include bridge deck resurfacing, repair of deteriorated concrete on abutments and piers, repaving of the roadway leading up to the bridges, and joint closures. In addition, the southbound bridge will receive repairs to the concrete barrier that separates the road from a shared-use path.

All work is weather-permitting, the Virginia Department of Transportation says.

According to VDOT, the northbound bridge was built in 1959, and the southbound bridge was constructed in 1976. Both were widened in 1989, with the northbound bridge’s deck also replaced at that time.

As part of the overall project, the Monroe Street/Van Buren Street bridges and the Herndon-Monroe Park and Ride ramp bridge are also scheduled to have work done at a later date. All work is expected to be completed by summer, VDOT says.